diff --git a/lib/vtls/nss.c b/lib/vtls/nss.c
index a3d3e58bbe..9dceb9773f 100644
--- a/lib/vtls/nss.c
+++ b/lib/vtls/nss.c
@@ -2164,7 +2164,7 @@ static CURLcode nss_connect_common(struct connectdata *conn, int sockindex,
     if(!blocking)
       /* CURLE_AGAIN in non-blocking mode is not an error */
       return CURLE_OK;
-    /* fall through */
+    /* FALLTHROUGH */
   default:
     return result;
   }